Actually, I'm considering invoking arbitration. I am legally entitled to the benefit of my bargain, which is the value of a hotel for Dec. 22-26 in the Empire State Building Area that has a king bed and a sofabed and is a hotel at one of the the four locations mapped on their Express Deal offer page. They owe me more than cancellation and a refund. In addition, arbitration provides the possibility of a $5000 minimum recovery if an arbitrator should award me more than the last written settlement offer provided by Priceline, plus costs and attorney's fees. See Priceline's Terms and Conditions, Part I-A-2-g.
Please note that, as of today, (10/31/2019 at 2:12 pm), Priceline's web site still [incorrectly] describes the Hyatt Place Manhattan/Times Square, as being in the Empire State Building Area. In other words, their web site still misleads potential customers as to its location.
I did call the Hyatt Place/Times Square phone number that is on my reservation, but it simply transfers to the Hyatt corporate reservation people. The Hyatt rep. at the Hyatt system-wide reservation desk tried to call the Hyatt Place Times Square hotel directly, but found that their on-site phone number is not yet operational, either within the Hyatt phone system or using the regular telephone number. So it's a little difficult to understand how exactly the corporate official who emailed me this morning that he had "tried to reach out to the hotel to ask for a cancellation exception on [my] behalf" did so, and was unsuccessful in getting a cancellation. And note: I have never suggested that mere cancellation and refund would be a satisfactory resolution of this dispute.
The corporate reservation rep also told me that Hyatt hotel managers don't have authority to deal directly with Priceline, so that neither the HP Midtown South manager or the new HP Times Square manager would be able to reach out to Priceline and get Priceline to fix its error going forward. (Is that your understanding as well?)
The corporate Hyatt reservationist did confirm that I have a reservation at the Hyatt Place Times Square for the four nights at issue.